Atmel ATMEGA256RFR2 Xplained Pro User Manual page 11

Pin on EXT3
15
16
17
18
19
20
1
Notes: Connected through cut-strap
Table 4-4. Extension header EXT4
Pin on EXT4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Table 4-5. Extension header EXT5
Pin on EXT5
1
2
3
ATmega256RFR2 pin
PG4
PB2
PB3
PB1
ATmega256RFR2 pin
PB5
PE5
PG0
PD1
PD0
PE0
PE1
PD5
PB2
PB3
PB1
ATmega256RFR2 pin
Atmel ATMEGA256RFR2 Xplained Pro [USER GUIDE]
Function
GPIO / SPI chip select A
SPI MOSI
SPI MISO
SPI SCK
GND
VCC
Function
Communication line to
ID chip on extension
board.
GND
OC1A
GPIO / INT5
GPIO / SPI chip select B
TWI SDA
TWI SCL
UART0 RXD
UART0 TXD
GPIO / SPI chip select A
SPI MOSI
SPI MISO
SPI SCK
GND
VCC
Function
Communication line to
ID chip on extension
board.
GND
Shared functionality
connected through cut-
strap.
All other EXT headers.
All other EXT headers.
All other EXT headers.
Shared functionality
EXT1 header.
EXT1 header.
EXT1 header.
All other EXT headers.
All other EXT headers.
All other EXT headers.
EXT2, EXT3 and EXT5
connected through cut-
strap.
All other EXT headers.
EXT2, EXT3 and EXT5
connected through cut-
strap.
EXT1 header.
All other EXT headers.
All other EXT headers.
All other EXT headers.
Shared functionality
11
42079C-MCU-05/2013